| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] back [prep] the [noun sg] | 29 |
|
| 2 | must [vb infin] back [prep] [art] [noun sg] | 29 |
|
| 3 | must [vb infin] back [prep] [art] [noun sg] | 29 |
|
| 4 | must [vb infin] back [prep] the [noun sg] | 29 |
|
| 5 | must [vb infin] back [prep] [art] [noun sg] | 29 |
|
| 6 | must [vb infin] back to [art] [noun sg] | 24 |
|
| 7 | must [vb infin] back to [art] [noun sg] | 24 |
|
| 8 | must get back [prep] [art] [noun sg] | 10 |
|
| 9 | must go back [prep] [art] [noun sg] | 9 |
|
